Explosive Actuated Tools

Question 1

What is a power load?

Answer 1

A power load is a loaded cartridge used in an explosive actuated tool.

Question 2

What caliber are power loads available in?

Answer 2

.22

.25

.27

Question 3

Low velocity tools use _____ power loads?

Answer 3

Crimp ended

Question 4

What are the 6 colours and load velocity’s?

Answer 4

1-grey (91 MPs)(300 fps)
2-brown (119 mps) (380fps)
3-green (146 mps/480fps)
4-yellow (174mps/570fps)
5-red(201mps/660fps)
6-purple(229mps/750fps)

+90 Feet per second
+28 meters per second

Question 5

A piece of hardware that mechanically joins two or more objects together is?

Answer 5

Fastener

Question 6

Three common types of fasteners?

Answer 6

Drive pins-pin material directly to object

Threaded studs-shank imbedded into material and object can be stretched to threaded material.

Drive pin assemblies-conduit clip, top hat, ceiling clip

Question 7

Over 4.83mm or 3/16 type fastener?

Answer 7

Heavy duty

Question 8

Under 4.83mm or 3/16 is what type fastener?

Answer 8

Light duty

Question 9

What are applied loads

Answer 9

Tension load - force of fastener perpendicular to the base material

Shear load - force to the fastener perpendicular to the fastener

Bending load - force applied at a distance from the surface to the base material

Question 10

What characteristics make a good base material?

Answer 10

Resilience to expand and compress when pierced

Sufficient hardness to produce holding power

Sufficient thickness to produce holding power, but not allow fastener to fully pass through.

Question 11

What are characteristics of unsuitable base materials?

Answer 11

How brittle they are:
Glass
Glazed tile
Brick

How soft they are: 
Wood 
Plaster
Drywall
Composition board
Plywood

Question 12

What is the centre punch procedure?

Answer 12

A test to determine if the base material is suitable.

Take a fastener, hit the fastener with a single average straight hammer blow.

Makes nice dent - continue to gun set up

Blunts fastener end- to hard

Cracks the material - to brittle

Sinks into material - to soft

Question 13

Suitable concrete base materials?

Answer 13

Poured concrete(suitable thickness)
Pre cast concrete(engineer’s approval) 
Pre stressed concrete(engineer’s approval)
Concrete block(web only) 
Brick (horizontal joints only)

Question 14

What is load strength?

Answer 14

Ability of fastener to withstand tension and shear force.

Question 15

What factors influence load strength?

Answer 15

Fastener shank diameter and depth of penetration

Density and strength of the base material

Masonry/concrete spall

Hardness and concentration of aggregate

Fastener spacing and edge distance

Load strength adjustments

Question 16

What is a properly set fastener in concrete?

Answer 16

The fastener penetrates the concrete 6 to 8 times the diameter of the shank but only penetrates the base material to a depth equal to 1/3 the total thickness.

Proper nail size= proper embedment-thickness of material.

Proper embedment 1 1/8 to 1 1/2

Question 17

Base material cracks

Answer 17

Fasteners set to close to edge
Fasteners set to close together
Improperly cured concrete

Question 18

Far side of base material breaks away

Answer 18

Base material to thin

To long of fastener

Question 19

Reduce spalling by:

Answer 19

Use fastener with smaller shank

Try longer shank length or lesson the power load

Hold tool perpendicular

Mount a stop spall adapter

Drive fastener through a approved steel disc

Question 20

What is proper fastener spacing for concrete?

Answer 20

3 inches from edge and 3 inches from each other.

Question 21

In order to get maximum holding power in steel, what is the ideal penetration through the base?

Answer 21

1/4” or 6mm

Question 22

What is the correct fastener spacing for steel?

Answer 22

1/2” from edge
2” from each other
2” from welds or other major heating

Question 23

What are the firing procedures?

Answer 23

Select proper fastener 
Select proper accessories if needed
Select the power load 
Load the tool 
Fire the tool

Question 24

What dictates type of fastener?

Answer 24

Thickness of hardness of a material

Type and thickness of material being applied

Intended use of application

Question 25

What do you do if the gun misfires

Answer 25

Wait 30 seconds once the gun misfires and shoot again.

If the cartridge fails a second time wait 30
Seconds and remove cartridge and place in container of water

Properly dispose of.

Question 26

Where are explosive actuated guns kept?

Answer 26

Locked in a container

Question 27

Why must proper ventilation be used during operation of explosive actuated tool?

Answer 27

To prevent the injection of lead